Now that I’m actually looking for it

Interesting tidbit: OpenVPN over TCP on port 53 apparently works. Not sure why it’d be like that, but maybe it’s something unexpected from infrastructure put in place for DNS poisoning. Possibly unrestricted, but mirrored to the DNS servers, which drop the connection when it’s discovered to be TCP instead?

This entry was posted on December 28, 2012, 2:28 pm by Kyle Lexmond and is filed under Sysadmin. You can follow any responses to this entry through RSS 2.0.
You can leave a response, or trackback from your own site.